<template>
    <a-layout>
        <a-layout-content :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }">
            <p>
                <a-form layout="inline" :model="param">
                    <a-form-item>
                        <a-input v-model:value="param.name" placeholder="名称">
                        </a-input>
                    </a-form-item>
                    <a-form-item>
                        <a-button type="primary" @click="handleQuery({page: 1, size: pagination.pageSize})">
                            查询
                        </a-button>
                    </a-form-item>
                    <a-form-item>
                        <a-button type="primary" @click="add()">
                            新增
                        </a-button>
                    </a-form-item>
                </a-form>
            </p>

            <a-table :columns="columns" :row-key="record => record.id" :data-source="ebooks" :pagination="pagination"
                     :loading="loading" @change="handleTableChange">
                <template #cover="{ text: cover }"><img v-if="cover" :src="cover" alt="avatar"/></template>
                <template v-slot:category="{ text, record }">
                    <span>{{ getCategoryName(record.category1Id) }} / {{ getCategoryName(record.category2Id) }}</span>
                </template>
                <template v-slot:action="{ text, record }">
                    <a-space size="small">
                        <router-link :to="'/admin/doc?ebookId=' + record.id">
                            <a-button type="primary" >
                                文档管理
                            </a-button>
                        </router-link>
                        <a-button type="primary" @click="edit(record)">
                            编辑
                        </a-button>
                        <a-popconfirm
                                title="删除后不可恢复,确认删除?"
                                ok-text="是"
                                cancel-text="否"
                                @confirm="handeldelete(record.id)"
                        >
                            <a-button type="danger">
                                删除
                            </a-button>
                        </a-popconfirm>

                    </a-space>
                </template>
            </a-table>
        </a-layout-content>
    </a-layout>
    <a-modal
            title="电子书表单"
            v-model:visible="modalVisible"
            :confirm-loading="modalLoading"
            @ok="handleModalOk"
    >
        <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
            <a-form-item label="封面">
                <a-input v-model:value="ebook.cover"/>
            </a-form-item>
            <a-form-item label="名称">
                <a-input v-model:value="ebook.name"/>
            </a-form-item>
            <a-form-item label="分类">
                <a-cascader
                        v-model:value="categoryIds"
                        :field-names="{ label: 'name', value: 'id', children: 'children' }"
                        :options="level1"
                />
            </a-form-item>
            <a-form-item label="描述">
                <a-input v-model:value="ebook.description" type="textarea"/>
            </a-form-item>
        </a-form>
    </a-modal>
</template>
<script lang="ts"> import {defineComponent, onMounted, ref} from 'vue';
import axios from 'axios';
import {message} from "ant-design-vue";
import {Tool} from "@/util/tool";

export default defineComponent({
    name: 'AdminEbook', setup() {
        const param = ref();
        param.value = {};
        /**
         * 数组，[100, 101]对应：前端开发 / Vue
         */
        const categoryIds = ref();
        const ebooks = ref();
        const pagination = ref({current: 1, pageSize: 10, total: 0});
        const loading = ref(false);
        const columns = [
            {
                title: '封面',
                dataIndex: 'cover',
                slots: {customRender: 'cover'}
            },
            {
                title: '名称',
                dataIndex: 'name'
            },
            {
                title: '分类',
                slots: {customRender: 'category'}
            },
            {
                title: '文档数',
                dataIndex: 'docCount'
            },
            {
                title: '阅读数',
                dataIndex: 'viewCount'
            },
            {
                title: '点赞数',
                dataIndex: 'voteCount'
            },
            {
                title: 'Action',
                key: 'action',
                slots: {customRender: 'action'}
            }
        ];
        /** * 数据查询 **/
        const handleQuery = (params: any) => {
            loading.value = true;
            axios.get("/ebook/list", {
                params: {
                    page: params.page,
                    size: params.size,
                    name: param.value.name
                }
            }).then((response) => {
                loading.value = false;
                const data = response.data;
                if (data.success) {
                    ebooks.value = data.content.list;
                    /* 重置分页按钮*/
                    pagination.value.current = params.page;
                    pagination.value.total = data.content.total;
                } else {
                    message.error(data.message);
                }
            });
        };
        /** * 表格点击页码时触发 */
        const handleTableChange = (pagination: any) => {
            console.log("看看自带的分页参数都有啥：" + pagination);
            handleQuery({page: pagination.current, size: pagination.pageSize});
        };

        // -------- 表单 ---------
        const ebook = ref();
        const modalVisible = ref(false);
        const modalLoading = ref(false);
        const handleModalOk = () => {
            modalLoading.value = true;
            ebook.value.category1Id = categoryIds.value[0];
            ebook.value.category2Id = categoryIds.value[1];
            axios.post("/ebook/save", ebook.value).then((response) => {
                const data = response.data;
                modalLoading.value = false;
                if (data.success) {
                    modalVisible.value = false;
                    // 重新加载数据
                    handleQuery({
                        page: 1,
                        size: pagination.value.pageSize
                    });
                } else {
                    message.error(data.message);
                }
            });
        };
        /**
         * 编辑
         */
        const edit = (record: any) => {
            modalVisible.value = true;
            ebook.value = Tool.copy(record);
            categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id]
        };
        const level1 = ref();
        let categorys: any;
        /**
         * 查询所有分类
         **/
        const handleQueryCategory = () => {
            loading.value = true;
            axios.get("/category/all").then((response) => {
                loading.value = false;
                const data = response.data;
                if (data.success) {
                    categorys = data.content;
                    console.log("原始数组：", categorys);

                    level1.value = [];
                    level1.value = Tool.array2Tree(categorys, 0);
                    console.log("树形结构：", level1.value);
                    //加载分类后，再加载电子书，否则如果分类树加载很慢，则
                    // 电子书渲染会报错
                    handleQuery({
                        page: 1,
                        size: pagination.value.pageSize
                    });
                } else {
                    message.error(data.message);
                }
            });
        };
        /**
         * 保存
         */
        const add = () => {
            modalVisible.value = true;
            ebook.value = {};
        };

        /**
         * 删除
         */
        const handeldelete = (id: number) => {
            axios.delete("/ebook/delete/" + id).then((response) => {
                const data = response.data;
              if (data.success) {
                // 重新加载数据
                handleQuery({
                  page: pagination.value.current,
                  size: pagination.value.pageSize
                });
              } else {
                message.error(data.message);
              }
            });

        };
        const getCategoryName = (cid: number) => {
            // console.log(cid)
            let result = "";
            categorys.forEach((item: any) => {
                if (item.id === cid) {
                    // return item.name; // 注意，这里直接return不起作用
                    result = item.name;
                }
            });
            return result;
        };
        onMounted(() => {
            handleQueryCategory();

        });
        return {
            ebooks, pagination, columns, loading, handleTableChange,
            param,
            edit,
            add,

            modalVisible,
            modalLoading,
            handleModalOk,
            ebook,

            handeldelete,
            handleQuery,

            categoryIds,
            level1,
            getCategoryName,
        }
    }
});</script>
<style scoped> img {
    width: 50px;
    height: 50px;
}</style>
